[FIX] check null pointer

kprobe_exceptions_notify()

Change-Id: I9033defea2b3354b6012577a9f132d4dd94f63c6
Signed-off-by: Vyacheslav Cherkashin <v.cherkashin@samsung.com>

diff --git a/kprobe/arch/asm-x86/dbi_kprobes.c b/kprobe/arch/asm-x86/dbi_kprobes.c
index a6c8c17..38ce8b0 100644 (file)
--- a/kprobe/arch/asm-x86/dbi_kprobes.c
+++ b/kprobe/arch/asm-x86/dbi_kprobes.c
@@ -745,7 +745,7 @@ int kprobe_exceptions_notify (struct notifier_block *self, unsigned long val, vo
 
        DBPRINTF ("val = %ld, data = 0x%X", val, (unsigned int) data);
 
-       if (args->regs && user_mode_vm(args->regs))
+       if (args->regs == NULL || user_mode_vm(args->regs))
                return ret;
 
        DBPRINTF ("switch (val) %lu %d %d", val, DIE_INT3, DIE_TRAP);